The help file states:
'PURIFIED MIND'
The fervor of a paladin with this edge will also grant them a resistance to
mental attacks for a very short time.

The affect of fervor WITHOUT "Purified Mind" is:
Commune: 'fervor' modifies save vs mental by -X for X hours.
Commune: 'fervor' modifies morale by X for X hours.

QUESTION: since the help file states it ALSO grants a resistance to mental attacks, I am confused as to what it actually adds to fervor. Is it more mental resist? Does anyone know?